Low Head Hydropower Articles & Analysis
2 articles found
Abstract Hydraulic turbine discharges in low-head hydroelectric plants, and plants with awkward intake geometries can be measured relatively easily with the Acoustic Scintillation Flowmeter (ASFM). The ASFM is non-intrusive, and may be deployed in intake gate slots in a straightforward manner, lending itself to multiple measurements in the same plant. Examples of measurements in two generating ...
Recent work has improved understanding of the performance of the Acoustic Scintillation Flow Meter (ASFM) in hydroelectric intakes, particularly the factors affecting the accuracy of the results. The primary cause for systematic (or bias) errors was found to be coincident, strong inhomogeneities in the intensity of small-scale turbulence and the mean velocity in the measurement plane, such as are ...